PointLight.h

#pragma once
#include "Light.h"

#include <vector>

#include "OmniShadowMap.h"
class PointLight :
	public Light
{
public:
	PointLight();
	PointLight(GLuint shadowWidth, GLuint shadowHeight,
		GLfloat near, GLfloat far,
		GLfloat red, GLfloat green, GLfloat blue,
		GLfloat aIntensity, GLfloat dIntensity,
		GLfloat xPos, GLfloat yPos, GLfloat zPos,
		GLfloat con, GLfloat lin, GLfloat exp); 

	void UseLight(GLuint ambientIntensityLocation, GLuint ambientColourLocation, 
				  GLuint diffuseIntensityLocation, GLuint positionLocation, 
				  GLuint constantLocation, GLuint linearLocation, GLuint exponentLocation);

	std::vector<glm::mat4> CalculateLightTransform();

	GLfloat GetFarPlane();
	glm::vec3 GetPosition();

	~PointLight();

protected:
	glm::vec3 position;

	GLfloat constant, linear, exponent;			//used for attenuation - i.e. how the light drops off over a distance. ax2 + bx + c - Here a = exponent, b = linear, c = constant

	GLfloat farPlane;			//how far away our camera can see
};